Linus Torvalds wrote:
So the only reason to add back "volatile" to the atomic_read() sequence is
not to fix bugs, but to _hide_ the bugs better. They're still there, they
are just a lot harder to trigger, and tend to be a lot subtler.
What about barrier removal? With consistent semantics we could optimize a fair
amount of code. Whether or not that constitutes "premature" optimization is
open to debate, but there's no question we could reduce our register wiping in
some places.
-- Chris
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